Combined parallel rocker and picking-stick check for looms.



PATENTED MAY 7, 1907.

W. LBARY. COMBINED PARALLEL ROCKER AND PICKING STICK CHECK FOR LOOMS.

APPLICATION FILED JAN. 11. 1907.

,, WASHINGTON. n. c.

UNITED STATES PATENT QFFIGEO WILLIAM LEARY, OF NEW BEDFORD, MASSACHUSETTS.

COMBINED PARALLEL ROCKER AND PlCKlNG-STICK CHECK FOR LOOIVIS.

Specification of Letters Patent.

Patented May 7, 1907.

Application filed January 11,1907- Serial No. 351,788.

To all whont it may concern:

Be it known that I, WILLIAM LEARY, a citizen of the United States, residing in New Bedford, in the county of Bristol and State of Massachusetts, have invented a new and Improved Combined Parallel Rocker and Picking-Stick Check for Looms, of which the following is a specification.

This invention has for its principal objects, to transfer the strain of the picking motion from the bolt (which is often broken thereby) to the casting, the picking-stick in the present invention standing on the casting and being supported at its edges and one side by said casting, the bolt being employed solely to retain it in position; to do away with the usual spring and strap on the bottom part of the rocker, which often breaks; to lessen the number of parts and provide greater simplicity of construction; to apply a check at the lower end of the stick which will operate on the stick after the power has been fully delivered and during the further travel of the stick due to momentum, such travel being about three inches in addition to the about nine inches of travel during the delivery or application of the power, thus practically nearly stopping the stick before it reaches the bunter and prevents breakage of the picking-stick; to cushion the pin in the slot in the upper part of the rocker; and in other respects to improve the mechanism and lessen the danger of smashes in the shed.

The nature of the invention is fully described in detail below, and illustrated in the accompanying drawings, in which Figure 1 is an elevation showing my invention or improvement and the parts of the loom which are directly connected therewith. Figs. 2 and 3 are enlarged sectional details illustrating the rocker in different positions. Fig. 4 is a section taken on line 44, Fig. 2. Fig. 5 is a section taken on line 55, Fig. 3.

a represents a portion of the frame of a loom, b, a portion of the lay, c, 0 0 the pickball and camshaft, all constructed as usualand d, the strap connecting with the pickingstick d.

Instead of bolting the lower end of the picking-stick to and with its edge against the casting, the bolt extending through it the larger way, whereby practically all the strain of the picking-motion is sustained by the bolt, which frequently breaks, causing smashes in the shed of the loomin the present invention the lower end of the stick stands on the upper part or member 9 of the parallel rocker, and said member is provided with an upward integral extension consisting of the side portion h and parallel end-portions h which are of shape to extend up next one of the sides and both of the edges of the picking-stick, as indicated by broken lines in Figs. 2 and 3, and by full lines in Figs. 4 and 5. A bolt f extends horizontally through the part it and the stick from side to side, and is secured by suitable nuts f. The bolt simply holds the stick in place, but does not sustain the strain of the pickingmotion, such strain being sustained by the parts h of the casting constituting the upper member 9. Thus danger of smashes from breakage of the bolt is obviated.

The upper member g is formed up transversely and centrally at 9 and this portion g is provided with a horizontal slot is upwardly elongated. The upper member rests on the bottom part or member Z of the rocker, said bottom part being provided with the bored extension Z which receives the rocker-shaftt to which it may be rigidly connected in any ordinary manner, as by a setscrew. Ears n integral with the member Z extend up therefrom on opposite sides of the upper member 9 which rests on the lower member between said ears, and a case-hardened pin 19 extends from the ears horizontally through the elongated slot 76, said pin being secured in the ears in any suitable manner. The lower member is furthermore provided with a central hole 1" into which a projection 8 extends from and integral with the upper member. A spring t connects the upper part of the upper member beyond the stick with the extreme end of the outer portion of the lower member, and holds the upper member normally with its heel down, as shown. The lower portion of the slot is is provided with a cushion v.

l/Vhen the pick of the loom has been delivered the power of the blow causes the stick to travel some nine inches and then ceases, and the stick travels some three inches farther by momentum and strikes hard against the bunter.

In the present invention the construction provides a check at the lower end of the stick, said check operating on the forward movement of the stick when the power has been fully delivered and during the last three inches of movement by momentum In Figs. 1, 2 and 4 the parts are in the position assumed before the beginning of the throw, the spring 15 being relaxed, the pin 29 being in the slot 7c at a distance above the cushion v, the projection 8 extending toward the left in the hole r. Then the stick reaches the point at which its further movement is solely by the power of momentum the cushion v is brought up against the pin 19 in the slot 7c by the relative movement of the upper member g, the spring 25 is expanded, and the projection s is swung toward the right in the hole 1", all asillustrated in Fig. 3. Thus this cushion (which may be of leather or rubber) comes in contact with the pin after the direct power has gone, checking .the stick-so that it is practically stopped picking-stick check, an upper member provided with a slotted central transversely thickened portion said slot being upwardly elongated, a cushion in the lower end of the slot, a lower member provided centrally with a vertical hole, a projection extending downber with the corresponding end of the lower member, substantially asset forth.

2. In a combined parallel rocker and pieking-stick check, an upper member provided with a slotted central transversely thickened portion said slot being upwardly i elongated, a cushion in the lower end .of the slot, a lower member provided centrally with a verticalhole, a projection extending downward from the upper member into said hole, ears extending upward from the lower member on opposite sides of said thickened portion of the upper member, a pin extending from the ears through said slot, an up ward extension integral with the upper member and adapted to lie against the edges and one side of the stick as it stands on the upper member, and a spring connecting theupper outer edge of said upward extension with the outer end of the lower member, substantially as set forth.

. In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM LEARY.

WVitnesses:

LESTER W. JENNEY, JENNIE S. POTTER. 

